Vinho Porto, Porto, or simply Port is a fortified wine produced solely in Portugal’s Douro Valley.  Five indigenous grapes are mainly used for Port production, Tinta Barroca, Tinta Cao, Tinta Roriz, Touriga Francesa, and Touriga Nacional – and the fermentation process is stopped when a neutral grape spirit (basically a brandy) is added to the wine.  The resulting product is slightly sweet from the unfermented sugars, with the high-alcohol richness from the addition of the brandy.  While the general production process is similar, variations within the process result in greatly varied styles of Port, from the violet-hued freshness of a Ruby Port, to the barrel-aged, slightly oxidized Tawny style, up to...   Read more